TY - EJOUR
AU - Gharehlar, Mahnaz Parastar
AU - Sheshmani, Shabnam
AU - Nikmaram, Farrokh Roya
AU - Doroudi, Zohreh
PY - 2024
DA - May
TI - Comparative study on Pb2+ adsorption using spinel nanostructures-embedded Graphene Oxide
T2 - International Journal of Nano Dimension (Int. J. Nano Dimens.)
VL - 15
L1 - https://oiccpress.com/international-journal-of-nano-dimension/article/comparative-study-on-pb2-adsorption-using-spinel-nanostructures-embedded-graphene-oxide/
DO - 10.57647/j.ijnd.2024.1503.23
N2 - This study investigates the adsorption performance of spinel nanostructures-embedded graphene oxide (GO) for removing toxic Pb2+ ions from water. The graphene oxide nanocomposites containing Fe3O4, CoFe2O4, and NiFe2O4 nanoparticles were synthesized and characterized. The NiFe2O4/GO nanocomposite exhibited the highest Pb2+ adsorption capacity, reaching 96.1% removal at 75 minutes contact time with initial Pb2+ concentration of 10 ppm. The CoFe2O4/GO nanocomposite achieved 90.3% Pb2+ removal under similar conditions, while Fe3O4/GO showed 88.8%. Kinetic studies revealed the adsorption followed a pseudo-second-order model with R2 values of 0.99-1.00. The adsorption mechanism involves surface adsorption on GO sheets and spinel nanoparticles. The nanocomposites demonstrated good recyclability, maintaining over 65% removal efficiency after three consecutive cycles. This study provides insights into designing effective adsorbents for mitigating potentially toxic elements pollution in water, addressing environmental and public health challenges.
IS - 3
PB - OICC Press
KW - Graphene oxide, CoFe2O4/GO, Fe3O4/GO, NiFe2O4/GO, Pb2+ Removal, Spinel 
EN -